socks5systemz | 1cbd1937d992b6a8e75cff9cef397e74fa7b57d49da3a70db45b04557260f742

General

Target

b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe
Size

3.7MB
MD5

cb4e8358a58de5cd176e3c4bbe264043
SHA1

cf4b296b1abb3e938fa29a983ad4b7577de20f2b
SHA256

b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71
SHA512

f89b9568404978c2a6bb6ce298ad43244870efa6d9ec64c9a46d80578faa1fd7f572d9d12b353c846202b62663e881f7b2096c4df18b52447a53bebc4e3896a8
SSDEEP

98304:g/VHo5FtMIF6lxYGduFlu3mSX/9ZfVJXtH5:RrdF6lxngq3jlZfXtH5

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/3396-78-0x0000000002E90000-0x0000000002FFA000-memory.dmp	family_socks5systemz
behavioral2/memory/3396-101-0x0000000002E90000-0x0000000002FFA000-memory.dmp	family_socks5systemz
behavioral2/memory/3396-102-0x0000000002E90000-0x0000000002FFA000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp
412	mkplayer32.exe
3396	mkplayer32.exe

Loads dropped DLL 1 IoCs

pid	Process
4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	152.89.198.214

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mkplayer32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mkplayer32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp
4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 4580	3668	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe	84
PID 3668 wrote to memory of 4580	3668	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe	84
PID 3668 wrote to memory of 4580	3668	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe	84
PID 4580 wrote to memory of 412	4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp	87
PID 4580 wrote to memory of 412	4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp	87
PID 4580 wrote to memory of 412	4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp	87
PID 4580 wrote to memory of 3396	4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp	89
PID 4580 wrote to memory of 3396	4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp	89
PID 4580 wrote to memory of 3396	4580	b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp	89

C:\Users\Admin\AppData\Local\Temp\b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe
"C:\Users\Admin\AppData\Local\Temp\b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Users\Admin\AppData\Local\Temp\is-SPAN7.tmp\b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SPAN7.tmp\b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp" /SL5="$50244,3566200,54272,C:\Users\Admin\AppData\Local\Temp\b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4580
- - C:\Users\Admin\AppData\Local\MKPlayer\mkplayer32.exe
    "C:\Users\Admin\AppData\Local\MKPlayer\mkplayer32.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:412
- - C:\Users\Admin\AppData\Local\MKPlayer\mkplayer32.exe
    "C:\Users\Admin\AppData\Local\MKPlayer\mkplayer32.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\MKPlayer\mkplayer32.exe

Filesize
3.2MB

MD5
25509cc04a5fc8f086d23e4786ae3b96

SHA1
9e28ea613eb207874ca4b9c4a675c43b1893ddd4

SHA256
99b3dfd22fcfab8595b6fb22d0783a0a508a03b56d6a31bcaf5cfd9b5de7dae3

SHA512
f6132588bf4c4dc31e730b658b280cae5769c4850d4b47b2443879b2f0715a23e6baffb986b91b1ee99dde84fa935b2ffa95fec66d27d77348e8231e255c5c96

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6SJ1P.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SPAN7.tmp\b1d16d8e6907f15b583f6aebe3ea9986dda807275ebbd239a5fdf9fbdaa88b71.tmp

Filesize
687KB

MD5
da1e1d5d4b338af0da9011fc280a5744

SHA1
50ed24dd1b2417dab6e3ab34a63e097412c8f3f6

SHA256
e18c6700deed84fd196345504242df2d203ec905114f2a788a2ae3679025bbae

SHA512
6a7001e379704b85440615457002521e410fd568fecb435ce215f4cd1ec335413a18ef92408d49b58412499a4c983988aeb634ab5c58f9a6630ef4801159cbc0

Download Submit
memory/412-52-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/412-55-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/412-56-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/412-51-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-66-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-78-0x0000000002E90000-0x0000000002FFA000-memory.dmp

Filesize
1.4MB

Download
memory/3396-109-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-59-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-106-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-102-0x0000000002E90000-0x0000000002FFA000-memory.dmp

Filesize
1.4MB

Download
memory/3396-63-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-101-0x0000000002E90000-0x0000000002FFA000-memory.dmp

Filesize
1.4MB

Download
memory/3396-69-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-72-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-75-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-100-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-80-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-85-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-88-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-91-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-94-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3396-97-0x0000000000400000-0x0000000000732000-memory.dmp

Filesize
3.2MB

Download
memory/3668-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3668-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3668-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4580-15-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4580-60-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download

Analysis

Sharing